Simply attach the strap to a pull-up bar and adjust the length and number of resistance-tube cables to provide the support needed. Cables easily attach/detach to increase/decrease assistance. Includes attachment strap, support strap w/ steel buckle, stirrup, three 16"L cables (60 lb peak assistance each), and DVD (Jon Hinds). 10"L x 9"W x 4"H; 2 lb.